Touch input device

ABSTRACT

The present invention relates to a touch input device, and more particularly, to a touch input device including a touch sensor, which is capable of accurately detecting whether a touch input to a touch surface is input by an object or/and a touch position even in a situation where the touch input device is in a floating state. The touch input device includes a touch surface, including: a touch sensor which is disposed under the touch surface and includes a plurality of driving electrodes, a plurality of receiving electrodes, and a plurality of dummy receiving electrodes; and a touch detection unit configured to detect a touch position of an object input to the touch surface based on a detection signal output from the plurality of receiving electrodes of the touch sensor, in which the touch detection unit detects the touch position of the object input to the touch surface.

CROSS REFERENCE TO RELATED PATENT APPLICATIONS

The present application is a U.S. national stage application under 35U.S.C. § 371 of PCT Application No. PCT/KR2020/001925, filed Feb. 11,2020, which claims priority to Korean Patent Application No.10-2019-0038292, filed Apr. 2, 2019. The disclosures of theaforementioned priority applications are incorporated herein byreference in their entireties.

TECHNICAL FIELD

The present invention relates to a touch input device, and moreparticularly, to a touch input device including a touch sensor, which iscapable of accurately detecting whether a touch input to a touch surfaceby an object is input or/and a touch position in a situation where thetouch input device is in a floating state.

BACKGROUND ART

Various types of input devices are used to operate a computing system.For example, the input devices, such as a button, a key, a joystick, anda touch screen, are used. Due to the easy and convenient operation ofthe touch screen, the use of the touch screen is increasing in theoperation of computing systems.

The touch screen may configure a touch surface of a touch input deviceincluding a touch sensor panel that may be a transparent panel providedwith a touch-sensitive surface. The touch sensor panel is attached to afront surface of a display screen, so that a touch-sensitive surface maycover a viewed surface of the display screen. A user is allowed tooperate a computing system by simply touching the touch screen with afinger and the like. In general, the computing system recognizes a touchand a touch position on a touch screen and interprets the touch toperform a calculation according to the interpretation.

In the case where driving electrodes and receiving electrodes areimplemented in the same layer or dual layers, when a touch input device,such as a smart phone, equipped with a touch sensor, is touched withoutbeing held by hand (floating state), a signal that should be normallydetected disappears or a signal to be detected is split by Low GroundMass (LGM), or a signal to be detected is split, so that there are caseswhere a signal appears as two or more points are touched.

DISCLOSURE Technical Problem

An object to be solved by the present invention is to provide a touchsensor capable of detecting a touch signal in the same or similar mannerto a grip state of a touch input device even in a floating state of thetouch input device, and a touch input device including the same.

Further, the present invention provides a touch sensor capable ofrecognizing two or more multi-touches even in the state where a touchinput device is in a floating state, and a touch input device includingthe same.

Furthermore, the present invention provides a touch sensor capable ofrecognizing a third touch touched together with a cross touch, and atouch input device including the same.

Technical Solution

A touch input device according to an exemplary embodiment is a touchinput device including a touch surface, including: a touch sensor whichis disposed under the touch surface and includes a plurality of drivingelectrodes, a plurality of receiving electrodes, and a plurality ofdummy receiving electrodes; and a touch detection unit configured todetect a touch position of an object input to the touch surface based ona detection signal output from the plurality of receiving electrodes ofthe touch sensor, in which the touch detection unit detects the touchposition of the object input to the touch surface by subtracting asecond detection signal output from a dummy receiving electrode thatdoes not form mutual capacitance with the predetermined drivingelectrode among the plurality of dummy receiving electrodes from a firstdetection signal output from a predetermined receiving electrode thatforms mutual capacitance with the predetermined driving electrode amongthe plurality of receiving electrodes.

A touch input device according to another exemplary embodiment is atouch input device including a touch surface, including: a touch sensorwhich is disposed under the touch surface and includes a plurality ofdriving electrodes, a plurality of receiving electrodes, and a pluralityof dummy driving electrodes; and a touch detection unit configured todetect a touch position of an object input to the touch surface based ona detection signal output from the plurality of receiving electrodes ofthe touch sensor, in which the touch detection unit detects the touchposition of the object input to the touch surface by subtracting asecond detection signal output from a predetermined receiving electrodethat does not form mutual capacitance with a predetermined dummy drivingelectrode among the plurality of receiving electrodes from a firstdetection signal output from a predetermined receiving electrode thatforms mutual capacitance with a predetermined driving electrode amongthe plurality of receiving electrodes.

A touch input device according to still another exemplary embodiment isa touch input device including a touch surface, including: a touchsensor which is disposed under the touch surface and includes aplurality of driving electrodes and a plurality of receiving electrodes;and a touch detection unit configured to detect a touch position of anobject input to the touch surface based on a detection signal outputfrom the plurality of receiving electrodes of the touch sensor, in whichthe touch detection unit detects the touch position of the object inputto the touch surface by subtracting a second detection signal outputfrom another predetermined receiving electrode that does not form mutualcapacitance with a predetermined driving electrode among the pluralityof receiving electrodes from a first detection signal output from apredetermined receiving electrode that forms mutual capacitance with thepredetermined driving electrode among the plurality of receivingelectrodes.

A touch sensor according to an exemplary embodiment includes: aplurality of driving electrodes; a plurality of receiving electrodeswhich is electrically insulated from the plurality of drivingelectrodes, and forms mutual capacitance with the plurality of drivingelectrodes; and a plurality of dummy receiving electrodes which iselectrically insulated from the plurality of driving electrodes and theplurality of receiving electrodes, and does not form mutual capacitancewith the plurality of driving electrodes, in which when a driving signalis applied through a predetermined driving electrode among the pluralityof driving electrodes, a first detection signal output from apredetermined receiving electrode among the plurality of receivingelectrodes includes information on the amount of mutual capacitancechanged between the predetermined driving electrode and thepredetermined receiving electrode and noise information, a seconddetection signal output from a predetermined dummy receiving electrodeamong the plurality of dummy receiving electrodes includes the noiseinformation, and the noise information includes information on theamount of negative (−) capacitance changed by an LGM jamming signalgenerated by coupling between an object and the predetermined drivingelectrode.

A touch sensor according to another exemplary embodiment includes: aplurality of driving electrodes; and a plurality of dummy drivingelectrodes electrically insulated from the plurality of drivingelectrodes; and a plurality of receiving electrodes which iselectrically insulated from the plurality of driving electrodes and theplurality of dummy driving electrodes, forms mutual capacitance with theplurality of driving electrodes, and does not form the mutualcapacitance with the plurality of dummy driving electrodes, in which apredetermined receiving electrode among the plurality of receivingelectrodes outputs a first detection signal and a second detectionsignal, the first detection signal includes information on the amount ofmutual capacitance changed between the predetermined receiving electrodeand a predetermined driving electrode among the plurality of drivingelectrodes and noise information, a second detection signal includes thenoise information, and the noise information includes information on theamount of negative (−) capacitance changed by an LGM jamming signalgenerated by coupling between an object and the predetermined drivingelectrode.

A touch sensor according to still another exemplary embodiment includes:a plurality of driving electrodes; and a plurality of receivingelectrodes which is electrically insulated from the plurality of drivingelectrodes, in which when a driving signal is applied through apredetermined driving electrode among the plurality of drivingelectrodes, a first detection signal output from a first receivingelectrode that forms mutual capacitance with the predetermined drivingelectrode among the plurality of receiving electrodes includesinformation on the amount of mutual capacitance changed between thepredetermined driving electrode and the first receiving electrode andnoise information, a second detection signal output from a secondreceiving electrode that does not form the mutual capacitance with thepredetermined driving electrode among the plurality of receivingelectrodes includes the noise information, and the noise informationincludes information on the amount of negative (−) capacitance changedby an LGM jamming signal generated by coupling between an object and thepredetermined driving electrode.

Advantageous Effects

When the touch sensor according to the exemplary embodiment of thepresent invention and the touch input device including the same areused, there is an advantage in that a touch signal may be detected evenin the state where the touch input device is in a floating stateidentically or similarly to the state where the touch input state is ina grip state.

Further, there is an advantage in that the touch input device is capableof recognizing two or more multi-touches even in a floating state.

Further, there is an advantage in that the touch input device is capableof recognizing a third touch touched together with a cross touch.

DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram illustrating a touch sensor 10 in ageneral touch input device and a configuration for operating the touchsensor.

FIGS. 2 and 3 are diagrams illustrating an example of a touch sensorhaving a dual-layer structure.

FIGS. 4A-F are exemplary cross-sectional structural views of a touchinput device including a touch sensor.

FIGS. 5 and 6 are output data for explaining why an LGM jamming signalis generated in the touch input device including the touch sensorillustrated in FIG. 2 or/and FIG. 3.

FIGS. 7 and 8 are diagrams for explaining a principle of generating anLGM jamming signal in the state where a touch input device including atouch sensor implemented with dual layers (two layers) is in a floatingstate.

FIG. 9 is a diagram illustrating an example in which a touch sensor 10illustrated in FIG. 1 is configured with a single layer (one layer).

FIG. 10 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed with a single layer (onelayer), and is an enlarged view of only a part.

FIGS. 11A-B represent raw data output in a touch input device when anobject, such as a thumb, is in contact with a specific portion of atouch surface of a touch input device having a structure of a touchsensor illustrated in FIG. 10.

FIG. 12 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed in a single layer (one layer),and is an enlarged diagram of only a part.

FIG. 13 represents raw data when an object, such as a thumb, is incontact with a specific portion of a touch surface of a touch inputdevice having a structure of a touch sensor illustrated in FIG. 12.

FIG. 14 is a graph representing a rough comparison of LGM performancebetween the touch sensors illustrated in FIGS. 10 and 12.

FIG. 15 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed in a single layer (one layer),and is an enlarged diagram of only a part.

FIG. 16 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed in a single layer (one layer),and is an enlarged diagram of only a part.

FIG. 17 is one exemplary conceptual diagram in which a touch sensoraccording to an exemplary embodiment of the present invention isconceptualized.

FIG. 18 is a conceptual diagram in which a touch sensor according to anexemplary embodiment of the present invention illustrated in FIG. 12 isconceptualized.

FIG. 19 is a diagram illustrating an example for describing electrodesused as dummy receiving electrodes among a plurality of receivingelectrodes of the touch sensor illustrated in FIG. 12.

FIGS. 20A-C are diagrams illustrating an example of raw data output in atouch input device including a touch sensor according to an exemplaryembodiment of the present invention illustrated in FIG. 12.

FIG. 21 is a conceptual diagram illustrating a touch sensor according toan exemplary embodiment of the present invention having a bridgestructure is conceptualized.

FIG. 22 is a configuration diagram of a touch sensor according to anexample to which the conceptual diagram of the touch sensor illustratedin FIG. 21 is applicable.

FIG. 23 is another conceptual diagram in which the touch sensoraccording to the exemplary embodiment of the present invention havingthe bridge structure is conceptualized.

FIG. 24 is a configuration diagram of a touch sensor according to anexample to which the conceptual diagram of the touch sensor illustratedin FIG. 23 is applicable.

FIG. 25 is a configuration diagram of a touch sensor according toanother example to which the conceptual diagram of the touch sensorillustrated in FIG. 21 is applicable.

FIG. 26 is a configuration diagram of a touch sensor according toanother example to which the conceptual diagram of the touch sensorillustrated in FIG. 23 is applicable.

FIG. 27 is raw data output from each of a state where a touch inputdevice including a touch sensor illustrated in FIG. 10 is in a gripstate and a state where a touch input device including a touch sensorillustrated in FIG. 10 is in a floating state when a test is performedusing a conductive rod of 15 phi.

FIG. 28 is raw data output from each of a state where a touch inputdevice according to an exemplary embodiment of the present inventionincluding a touch sensor illustrated in FIG. 12 is in a grip state and astate where a touch input device according to an exemplary embodiment ofthe present invention including a touch sensor illustrated in FIG. 12 isin a floating state when a test is performed using a conductive rod of15 phi.

FIG. 29 is raw data output from each of a state where a touch inputdevice including a touch sensor illustrated in FIG. 10 is in a gripstate and a state where a touch input device including a touch sensorillustrated in FIG. 10 is in a floating state when a test is performedusing a conductive rod of 20 phi.

FIG. 30 is raw data output from each of a state where a touch inputdevice according to an exemplary embodiment of the present inventionincluding a touch sensor illustrated in FIG. 12 is in a grip state and astate where a touch input device according to an exemplary embodiment ofthe present invention including a touch sensor illustrated in FIG. 12 isin a floating state when a test is performed using a conductive rod of20 phi.

FIG. 31 is raw data output from each of a state where a touch inputdevice including a touch sensor illustrated in FIG. 10 is in a gripstate and a state where a touch input device including a touch sensorillustrated in FIG. 10 is in a floating state when a test is performedusing a thumb of a person.

FIG. 32 is raw data output from each of a state where a touch inputdevice according to an exemplary embodiment of the present inventionincluding a touch sensor illustrated in FIG. 12 is in a grip state and astate where a touch input device according to an exemplary embodiment ofthe present invention including a touch sensor illustrated in FIG. 12 isin a floating state when a test is performed using a thumb of a person.

FIG. 33 is a diagram illustrating the case where the touch input devicesin the related art cannot recognize multi-touches by multiple objectswhen the touch input devices in the related art are in the floatingstate.

FIGS. 34A-C are raw data for describing that the touch input deviceaccording to the exemplary embodiment of the present inventionrecognizes multi-touches.

FIG. 35 is a diagram illustrating the case where a third touch is notrecognized when a cross touch and the third touch are input together totouch surfaces of the touch input devices in the related art.

FIGS. 36A-C are raw data for describing that the touch input deviceaccording to the exemplary embodiment of the present inventionrecognizes a cross touch and a third touch.

MODE FOR INVENTION

In the detailed description of the present invention described below,reference is made to the accompanying drawings, which illustrate aspecific exemplary embodiment in which the present invention may becarried out, as an example. The exemplary embodiment is described indetail sufficient to enable a person skilled in the art to carry out thepresent invention. It should be understood that various exemplaryembodiments of the present invention are different from each other, butneed not to be mutually exclusive. For example, specific shapes,structures, and characteristics described herein may be implemented inother exemplary embodiments without departing from the spirit and thescope of the present invention in relation to one exemplary embodiment.Further, it should be understood that a location or disposition of anindividual component in each disclosed exemplary embodiment may bechanged without departing from the spirit and the scope of the presentinvention. Accordingly, the detailed description below is not intendedto be taken in a limited meaning, and the scope of the presentinvention, if appropriately described, is limited only by the appendedclaims along with all scopes equivalent to those claimed by the claims.Like reference numerals in the drawings refer to the same or similarfunctions over several aspects.

Hereinafter, a touch sensor according to an exemplary embodiment of thepresent invention and a touch input device including the same will bedescribed with reference to the accompanying drawings. Hereinafter, acapacitive touch sensor 10 is exemplified, but the present invention mayalso be identically/similarly applied to a touch sensor 10 capable ofdetecting a touch position by a predetermined method.

FIG. 1 is a schematic diagram illustrating a touch sensor 10 in ageneral touch input device and a configuration for operating the touchsensor.

Referring to FIG. 1, the touch sensor 10 may include a predeterminedshape of patterns, and the predetermined patterns may include aplurality of driving electrodes TX0 to TXn and a plurality of receivingelectrodes RX0 to RXm.

For an operation of the touch sensor 10, the touch sensor 10 may includea driving unit 12 which applies a driving signal to the plurality ofdriving electrodes TX0 to TXn, and a detection unit 11 which receives adetection signal including information about the amount of changedcapacitance changed according to a touch to a touch surface from theplurality of receiving electrodes RX0 to RXm and detects a touch and atouch position.

FIG. 1 illustrates the case where the plurality of driving electrodesTX0 to TXn and the plurality of receiving electrodes RX0 to RXm of thetouch sensor 10 configure an orthogonal array, but the present inventionis not limited thereto, and the plurality of driving electrodes TX0 toTXn and the plurality of receiving electrodes RX0 to RXm may have anynumber of dimensions and applications arrangements thereof including adiagonal arrangement, a concentric arrangement, and a three-dimensionalrandom arrangement. Herein, n and m are positive integers, and may havethe same or different values, and have different sizes depending on anexemplary embodiment.

The plurality of driving electrodes TX0 to TXn and the plurality ofreceiving electrodes RX0 to RXm may be arranged to cross each other asillustrated in FIGS. 2 and 3. The driving electrode TX may include theplurality of driving electrodes TX0 to TXn extending in a first axisdirection, and the receiving electrode RX may include the plurality ofreceiving electrodes RX0 to RXm extending in a second axis directioncrossing the first axis direction.

The plurality of driving electrodes TX0 to TXn and the plurality ofreceiving electrodes RX0 to RXm may be formed on different dual layers(two layers) as illustrated in FIGS. 2 and 3. For example, the pluralityof driving electrodes TX0 to TXn and the plurality of receivingelectrodes RX0 to RXm may have a bar pattern as illustrated in FIG. 2,and may be a diamond pattern as illustrated in FIG. 3. Herein, the layeron which the plurality of driving electrodes TX0 to TXn is formed mayalso be disposed on a layer on which the plurality of receivingelectrodes RX0 to RXm is formed, or the layers may be disposed inreverse. An insulating layer for preventing short-circuit between theplurality of driving electrodes and the plurality of receivingelectrodes may be formed between the dual layers.

The touch sensor 10 including the plurality of driving electrodes TX0 toTXn and the plurality of receiving electrodes RX0 to RXm may be disposedbetween a cover layer 100 and a display panel 200A together with OCAdisposed above and beneath the touch sensor 10 (add-on) as illustratedin FIG. 4A. As illustrated in FIG. 4B, the touch sensor 10 may bedirectly disposed on an upper surface of the display panel 200A (forexample, an upper surface of an encapsulation layer of the display panel200A) (on-cell). In the meantime, the touch sensor 10 including theplurality of driving electrodes TX0 to TXn and the plurality ofreceiving electrodes RX0 to RXm may be disposed inside the display panel200A (for example, between the encapsulation layer and an organic lightemitting layer of the display panel 200A) (in-cell) as illustrated inFIG. 4C.

In FIGS. 4A-C, the display panel 200A may be a rigid OLED panel, and maybe a flexible OLED panel. When the display panel 200A is the rigid OLEDpanel, the encapsulation layer and a TFT layer may be formed of glass,and when the display panel 200A is the flexible OLED panel, theencapsulation layer may be formed of a thin film and a TFT layer may beformed of a PI film.

In the meantime, in FIGS. 4A-C, the display panel 200A is illustrated asan OLED panel, but the present invention is not limited thereto, and adisplay panel 200B may also be an LCD panel as illustrated in FIGS.4D-F. According to a characteristic of the LCD panel, a backlight unit(BLU) 250 is disposed under the display panel 200B.

In particular, as illustrated in FIG. 4D, the touch sensor 10 may beadded on a cover window glass 100. Herein, although not illustrated inthe drawing, the touch sensor 10 may also be added on an upper surfaceof the cover window glass 100 in the form of a film. As illustrated inFIG. 4E, the touch sensor 10 may be formed on a color filter glass ofthe display panel 200B (on-cell). Herein, the touch sensor 10 may alsobe formed on the upper surface of the color filter glass as illustratedin the drawing, and although not illustrated in the drawing, the touchsensor 10 may also be formed on a lower surface of the color filterglass. As illustrated in FIG. 4F, the touch sensor 10 may be formed on aTFT layer (TFT array) (in-cell). Herein, the touch sensor 10 may also beformed on an upper surface of the TFT layer (TFT array) as illustratedin the drawing, and although not illustrated in the drawing, the touchsensor 10 may also be formed on a lower surface of the TFT layer (TFTarray). Further, although not illustrated in a separate drawing, one ofthe driving electrode and the receiving electrode may be formed on thecolor filter glass of the display panel 200B and the remaining one mayalso be formed on the TFT layer.

Referring back to FIG. 1, the plurality of driving electrodes TX0 to TXnand the plurality of receiving electrodes RX0 to RXm may be made of atransparent conductive material (for example, indium tin oxide (ITO) orantimony tin oxide (ATO) made of tin oxide (SnO₂) and indium oxide(In₂O₃)). However, this is merely an example, and the driving electrodeTX and the receiving electrode RX may also be formed of othertransparent conductive materials or an opaque conductive material. Forexample, the driving electrode TX and the receiving electrode RX mayinclude at least one of silver ink, copper, nano silver, and carbonnanotube (CNT). Further, the driving electrode TX and the receivingelectrode RX may be implemented with a metal mesh.

The driving unit 12 may apply a driving signal to the driving electrodesTX0 to TXn. The detection unit 11 may detect whether a touch is inputand a touch position by receiving a detection signal includinginformation about the amount of mutual capacitance (Cm: 14) changedgenerated between the driving electrodes TX0 to TXn and the receivingelectrodes RX0 to RXm to which the driving signal is applied through thereceiving electrodes RX0 to RXm. The detection signal includes a noisesignal, as well as a signal in which the driving signal applied to thedriving electrode TX is coupled by mutual capacitance (Cm: 14) generatedbetween the driving electrode TX and the receiving electrode RX. Thenoise signal may include display noise information (for example, Zebranoise), information about the amount of change according to the changein an image displayed on the display, and information on an LGM jammingsignal (for example, the amount of negative (−) capacitance changed)generated in a floating state.

The detection unit 11 may include a receiver (not illustrated) connectedwith each of the receiving electrodes RX0 to RXm through a switch. Theswitch is turned on in a time period for detecting the signal of thecorresponding receiving electrode RX so that the sensing signal from thereceiving electrode RX may be detected by the receiver. The receiver mayinclude an amplifier (not illustrated) and a feedback capacitor coupledbetween a negative (−) input terminal of the amplifier and an outputterminal of the amplifier, that is, a feedback path. In this case, apositive (+) input terminal of the amplifier may be connected to ground.Further, the receiver may further include a reset switch connected tothe feedback capacitor in parallel. The reset switch may reset aconversion from a current to a voltage performed in the receiver. Thenegative input terminal of the amplifier may be connected to thecorresponding receiving electrode RX and receive a current signalincluding information on the capacitance (Cm: 14) and then integrate thereceived current signal and convert the integrated current signal to avoltage. The detection unit 11 may further include an analog to digitalconverter (ADC) (not illustrated) which converts the data integratedthrough the receiver to digital data value. Later, the digital data maybe input to a processor (not illustrated) and processed so as to obtaintouch information for the touch sensor 10. The detection unit 11 mayinclude the ADC and the processor together with the receiver.

A control unit 13 may perform a function of controlling the operationsof the driving unit 12 and the detection unit 11. For example, thecontrol unit 13 may generate a driving control signal and then transmitthe generated driving control signal to the driving unit 12 so that thedriving signal is applied to a predetermined driving electrode TX at apredetermined time. Further, the control unit 13 may generate adetection control signal and then transmit the generated detectioncontrol signal to the detection unit 11 to make the detection unit 11receive the detection signal from a predetermined receiving electrode RXat a predetermined time and perform a predetermined function.

In FIG. 1, the driving unit 12 and the detection unit 11 may configure atouch detection unit (not illustrated) which is capable of detectingwhether a touch is input to the touch sensor 10 and a touch position.Further, the touch detection unit may further include the control unit13. The touch detection unit may be integrated on a touch sensingIntegrated Circuit (IC). The driving electrode TX and the receivingelectrode RX included in the touch sensor 10 may be connected to thedriving unit 12 and the detection unit 11 included in the touch sensingIC through, for example, a conductive trace and/or a conductive patternprinted on a circuit board. The touch sensing IC may be positioned on acircuit board on which a conductive pattern is printed, for example, atouch circuit board (hereinafter, referred to as a touch PCB). Accordingto the exemplary embodiment, the touch sensing IC may be mounted on amain board for operating the touch input device.

As described above, predetermined capacitance (Cm) is generated at eachcrossing point of the driving electrode TX and the receiving electrodeRX, and when an object, such as a finger, approaches the touch sensor10, a value of the capacitance (Cm) may be changed. In FIG. 1, thecapacitance may represent mutual capacitance (Cm). The detection unit 11may detect the electric characteristic to detect whether a touch isinput to the touch sensor 10 and/or a touch position. For example, thedetection unit 10 may detect whether a touch is input for the surface ofthe touch sensor 10, which is formed of a two-dimensional planeconsisting of a first axis and a second axis, and/or the position of thetouch.

FIGS. 5 and 6 are output data for explaining why an LGM jamming signalis generated in the touch input device including the touch sensorillustrated in FIG. 2 or/and FIG. 3.

FIG. 5 illustrates data in which a detection signal output through thereceiving electrodes RX0 to RX33 is converted to a digital value (or asignal level value) in the case where an object is in contact with aspecific portion of a touch surface of the touch input deviceillustrated in FIG. 2 or FIG. 3 in a normal situation in which the touchinput device is gripped, and FIG. 6 illustrates data in which adetection signal output through the receiving electrodes RX0 to RX33 isconverted to a digital value (or a signal level value) in the case wherean object is in contact with the specific portion of the touch surfaceof the touch input device illustrated in FIG. 2 or FIG. 3 in the statewhere the touch input device is in a floated state.

As illustrated in FIG. 5, in the normal situation, a region in whichdigital values having a relatively large value among the output digitalvalues are distributed is located in the center part. However, asillustrated in FIG. 6, in the floating state, the digital values in thecenter part have a completely different aspect from that of FIG. 5. Thatis, in FIG. 6, the digital values of the center part have relatively lowvalues. In this case, even though a user actually makes one touch (orbig touch) on the touch surface of the touch input device, the touchinput device may erroneously recognize that the one touch is notperformed or the one touch is two or more touches. This is due to theamount of negative (−) capacitance changed by the LGM jamming signalgenerated by the coupling between the object and the driving electrode.

The normal situation of FIG. 5 is the situation in which the usertouches the touch surface of the touch input device with his/her fingerin the state where the user grips the touch input device, and the fingeracts as normal ground. Further, the floating state illustrated in FIG. 6exemplifies the situation where in the state where the touch inputdevice is placed on the floor or a cradle (for example, a cradle insidea car), the user touches the touch surface of the touch input devicewith his/her finger, and the finger does not act as normal ground.

Hereinafter, the reason why the digital value (or the signal levelvalue) output in the state where the touch input device illustrated inFIG. 6 is in the floating state is different from the digital value (orthe signal level value) output in the normal situation will be describedin detail with reference to FIGS. 7 to 9.

FIGS. 7 and 8 are diagrams for explaining a principle of generating anLGM jamming signal in the state where the touch input device includingthe touch sensor implemented with dual layers (two layers) is in thefloating state. For reference, in the description below, the object mayinclude a finger, a stylus, and the like.

Referring to FIGS. 7 and 8, in one predetermined cell region (includingthe plurality of driving electrodes and the plurality of receivingelectrodes included in a dotted-line region), the amount of signal(hereinafter, referred to as the “LGM jamming signal”) generateddetected in Low Ground Mass (hereinafter, abbreviated as “LGM”) isrelatively increased. Accordingly, as illustrated in FIG. 6, the digitalvalue corresponding to the finally output detection signal is decreased.In particular, in the case of the big touch (in the present invention,the big touch is defined as a case where the touch has a larger areathan a touch area of the rest of the fingers, such as the touch area ofthe thumb), the LGM jamming signal is relatively increased.

As illustrated in FIGS. 7 and 8, the LGM jamming signal is generated bycoupling capacitance (C1, C2, or CLGM) between the object and thedriving electrode Tx and/or the receiving electrode Rx, in addition tomutual capacitance (ΔCm) between the driving electrode and the receivingelectrode when the object touches the touch surface of the touch inputdevice that is in the floating state.

FIG. 9 is a diagram illustrating an example in which the touch sensor 10illustrated in FIG. 1 is configured with a single layer (one layer).

Referring to FIG. 9, the plurality of driving electrodes TX0 to TXm andthe plurality of receiving electrodes RX0 to RXm illustrated in FIG. 1are formed on one layer. For example, a set in which the plurality ofdriving electrodes Tx is disposed while being adjacent to onerectangular receiving electrode Rx may be arranged in the direction ofthe plurality of rows and columns. Herein, the number of drivingelectrodes Tx adjacent to one rectangular receiving electrode Rx mayalso be 4 as illustrated in the drawing, but the present invention isnot limited thereto. For example, the number of driving electrodes Txmay be three, two, or five or more. Further, the driving electrode Txand the receiving electrode Rx may be configured in reverse.

The touch input device including the touch sensor 10 having the singlelayer structure illustrated in FIG. 9 may exhibit different aspectsaccording to the grip state and the floating state as illustrated inFIGS. 5 and 6. This is due to the fact that the object is placed in theLGM in the floating state.

In more particular, the driving signal applied through the specificdriving electrode is input to the plurality of receiving electrodes RXthat is in contact with the object through the object in the LGM state.That is, the object in the LGM state forms a current path. Accordingly,each of the receiving electrodes that is in contact with the objectoutputs the LMG jamming signal (−diff) having an opposite sign to thatof a normal touch signal. Herein, the reason why the LGM jamming signalhas the sign opposite to that of the normal touch signal is that in thenormal touch signal, when the object is in contact with the receivingelectrodes in the state where predetermined mutual capacitance (Cm) isformed between the driving electrode and the receiving electrode, themutual capacitance (Cm) is decreased, but in the LGM jamming signal, thecoupling capacitance is generated due to the contact of the object inthe floating state, so that the LGM jamming signal and the normal touchsignal have opposite signs. Accordingly, the LGM jamming signalgenerated in the floating state causes a decrease in the digital value(or the signal level value) corresponding to the detection signal outputthrough each of the receiving electrodes.

Hereinafter, examples of the touch sensor in the single layer structurewill be described in more detail with reference to FIGS. 10 and 12, andraw data output in the state where the touch input device including eachtouch sensor is in the floating state will be described.

FIG. 10 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed with a single layer (onelayer), and is an enlarged view of only a part.

Referring to FIG. 10, the touch sensor includes the plurality of drivingelectrodes TX and the plurality of receiving electrodes RX. Theplurality of driving electrodes TX and the plurality of receivingelectrodes RX are arranged on the same layer in a matrix form.

The plurality of driving electrodes TX and the plurality of receivingelectrodes RX may be made of a transparent conductive material (forexample, indium tin oxide (ITO) or antimony tin oxide (ATO) made of tinoxide (SnO₂) and indium oxide (In₂O₃)) and the like. However, this ismerely an example, and the driving electrode TX and the receivingelectrode RX may also be formed of other transparent conductivematerials or an opaque conductive material. For example, the drivingelectrode TX and the receiving electrode RX may include at least one ofsilver ink, copper, nano silver, and carbon nanotube (CNT).

Further, the driving electrode TX and the receiving electrode RX may beimplemented with a metal mesh. When the driving electrode TX and thereceiving electrode RX are implemented with the metal mesh, the wiresconnected to the driving electrode TX and the receiving electrode RX mayalso be implemented with the metal mesh, and the driving electrode TXand the receiving electrode RX and the wires may also be integrallyimplemented with the metal mesh. When the driving electrode TX, thereceiving electrode RX, and the wires are integrally implemented withthe metal mesh, a dead zone, such as a space between the electrode andthe wire and/or a space between the electrode and another electrode, inwhich a touch position is not detected, is reduced, so that sensitivityof detecting a touch position may be further improved.

The touch sensor is arranged with respect to the plurality of receivingelectrodes RX. Accordingly, hereinafter, the arrangement structure ofthe receiving electrodes RX disposed in plural in columns B1 to B8 willbe first described, and then the arrangement structure of the pluralityof driving electrodes TX will be described.

The plurality of receiving electrodes RX is arranged in each of theplurality of columns B1, B2, B3, B4, B5, B6, B7, and B8. Herein, theplurality of driving electrodes TX is arranged in the plurality ofcolumns A1, A2, A3, A4, A5, A6, A7, A8, and A9 formed between theplurality of columns B1, B2, B3, B4, B5, B6, B7, and B8 in which thereceiving electrodes RX are arranged, and B8, at the external side ofthe first column B1, and at the external side of the eighth column B8.

With respect to each receiving electrode RX of the plurality ofreceiving electrodes RX, the two driving electrodes TX adjacent to bothsides are the same. That is, the two driving electrodes TX adjacent toboth sides with respect to each receiving electrode RX have the samenumber. Herein, the meaning that the two driving electrodes TX are thesame or that the numbers of the two driving electrodes TX are the sameis that the two driving electrodes TX are electrically connected throughwires.

The touch sensor includes one or more sets in which the plurality ofreceiving electrodes RX and the plurality of driving electrodes TX aredisposed in a predetermined arrangement. The plurality of sets may berepeatedly arranged in the column direction.

One set may include the plurality of different receiving electrodes RX,and for example, one set may include 16 receiving electrodes including a0^(th) receiving electrode RX0 to a 15^(th) receiving electrode RX15.The 16 receiving electrodes RX0, RX1, RX2, RX3, RX4, RX5, RX6, RX7, RX8,RX9, RX10, RX11, RX12, RX13, RX14, and RX15 may be disposed in apredetermined arrangement. The 16 receiving electrodes including the0^(th) receiving electrode RX0 to the 15^(th) receiving electrode RX15are divided and arranged in two rows consecutive in the columndirection. Accordingly, the eight receiving electrodes may be disposedin each of the two rows. The receiving electrodes numbered from 0 to 7are arranged from left to right in the order of RX0, RX1, RX2, RX3, RX4,RX5, RX6, and RX7 in a first row, and the receiving electrodes numberedfrom 8 to 15 are arranged from left to right in the order of RX15, RX14,RX13, RX12, RX11, RX10, RX9, and RX8 in a second row.

In the meantime, the touch sensor includes the plurality of drivingelectrodes TX, and for example, the plurality of driving electrodes TXmay include a 0^(th) driving electrode TX0 to a third driving electrodeTX3. Herein, each driving electrode may be disposed to satisfy thefollowing arrangement condition.

The plurality of driving electrodes TX is arranged to satisfy thefollowing conditions. 1) One driving electrode is disposed at each ofthe left side and the right side with respect to two different receivingelectrodes RX0 and RX15 consecutive in the column direction. 2) Twofacing driving electrodes TX0 and TX0 with respect to the two differentreceiving electrodes RX0 and RX15 consecutive in the column directionhave the same number. 3) The driving electrodes TX arranged in thecolumn direction have the different numbers, and the driving electrodesTX arranged in the row direction have the same number. 4) A length(horizontal length) of the driving electrodes arranged at both edges ofeach set may be half the length (horizontal length) of the other drivingelectrodes, but the present invention is not limited thereto, and thelengths may also be the same.

FIGS. 11A-B represent raw data output in a touch input device when anobject, such as a thumb, is in contact with a specific portion of atouch surface of a touch input device having a structure of a touchsensor illustrated in FIG. 10.

In particular, FIG. 11A is raw data output in the state where the touchinput device having the structure of the touch sensor illustrated inFIG. 10 is gripped, and FIG. 11B is raw data output in the state wherethe touch input device having the structure of the touch sensorillustrated in FIG. 10 is in a floating state.

The raw data of FIGS. 11A-B may be data derived through a followingremap process. When the driving signal is sequentially applied to theplurality of driving electrodes of the touch sensor illustrated in FIG.10, a predetermined detection signal is output from each of theplurality of receiving electrodes. The output detection signal isconverted to a digital value (or signal level value) corresponding tothe corresponding detection signal in the detection unit 11 illustratedin FIG. 1 and is output. Further, the detection unit 11 illustrated inFIG. 1 performs mapping so that the output digital values correspond tothe respective locations of the touch surface of the touch input device.Through the mapping process, the raw data of FIGS. 11A-B may be output.

The numbers indicated in the raw data of FIGS. 11A-B may be expressedwith integers, and when the corresponding integer is equal to or largerthan a predetermined reference integer value (for example, +65), thetouch detection unit of the touch input device may determine (orrecognize) that the touch is input by the object to the part where thecorresponding number is located.

Referring to FIG. 11A, in the grip state (normal situation), data valuesdistributed in the middle part of the raw data have relatively largerinteger values than other parts. In the meantime, referring to FIG. 11B,in the floating state, the digital values described in the middle partshow a different aspect from FIG. 11A. In particular, the middle partgenerally includes the relatively low integer value compared to FIG.11A, and even some parts of the middle part have negative values. Thisis due to the LGM jamming signal generated in the floating state, and asa result of this result, the touch input device may erroneouslyrecognize that two touches, not one touch, are input to the middle part,and may also erroneously recognize that no touch is input in the middlepart.

FIG. 12 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed in a single layer (one layer),and is an enlarged diagram of only a part.

Referring to FIG. 12, the touch sensor includes the plurality of drivingelectrodes TX and the plurality of receiving electrodes RX. Theplurality of driving electrodes TX and the plurality of receivingelectrodes RX are arranged on the same layer in a matrix form.

The plurality of driving electrodes TX and the plurality of receivingelectrodes RX may be made of a transparent conductive material (forexample, indium tin oxide (ITO) or antimony tin oxide (ATO) made of tinoxide (SnO₂) and indium oxide (In₂O₃)) and the like. However, this ismerely an example, and the driving electrode TX and the receivingelectrode RX may also be formed of other transparent conductivematerials or an opaque conductive material. For example, the drivingelectrode TX and the receiving electrode RX may include at least one ofsilver ink, copper, nano silver, and carbon nanotube (CNT).

Further, the driving electrode TX and the receiving electrode RX may beimplemented with a metal mesh. When the driving electrode TX and thereceiving electrode RX are implemented with the metal mesh, the wiresconnected to the driving electrode TX and the receiving electrode RX mayalso be implemented with the metal mesh, and the driving electrode TXand the receiving electrode RX and the wires may also be integrallyimplemented with the metal mesh. When the driving electrode TX, thereceiving electrode RX, and the wires are integrally implemented withthe metal mesh, a dead zone, such as a space between the electrode andthe wire and/or a space between the electrode and another electrode, inwhich a touch position is not detected, is reduced, so that sensitivityof detecting a touch position may be further improved.

The touch sensor is arranged with respect to the plurality of receivingelectrodes RX. Accordingly, the arrangement structure of the pluralityof receiving electrodes RX will be described first, and the arrangementstructure of the plurality of driving electrodes TX will be described.

The plurality of receiving electrodes RX is arranged in each of theplurality of columns A1, A2, A3, A4, A5, A6, A7, and A8. Herein, theplurality of driving electrodes TX is arranged in the plurality ofcolumns B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, and B12 formedbetween the plurality of columns A1, A2, A3, A4, A5, A6, A7, and A8, inwhich the plurality of receiving electrodes RX is arranged, at theexternal side of the first column A1, and at the external side of theeighth column A8.

With respect to each receiving electrode RX of the plurality ofreceiving electrodes RX, the two driving electrodes TX adjacent to bothsides have the same characteristic. That is, the two driving electrodesTX adjacent to both sides with respect to each receiving electrode RXhave the same number. Herein, the meaning that the two drivingelectrodes TX are the same or that the numbers of the two drivingelectrodes TX are the same is that the two driving electrodes TX areelectrically connected through wires.

The touch sensor includes one or more sets in which the plurality ofreceiving electrodes RX and the plurality of driving electrodes TX aredisposed in a predetermined arrangement. The plurality of sets isrepeatedly arranged in the row direction and the column direction toconfigure the touch sensor.

One set may include the plurality of different receiving electrodes RX,and for example, one set may include 8 receiving electrodes including a0^(th) receiving electrode RX0 to a seventh receiving electrode RX7. Theeight receiving electrodes RX0, RX1, RX2, RX3, RX4, RX5, RX6, and RX7may be disposed in a predetermined arrangement. The eight receivingelectrodes of the 0^(th) receiving electrode RX0 to the eighth receivingelectrode RX are divided and arranged in the four columns A1, A2, A3,and A4 consecutive in the row direction. Accordingly, in each of thefour columns, the two receiving electrodes may be disposed from top tobottom.

The plurality of receiving electrodes having the consecutive numbers isdisposed in each column. Herein, the arrangement order of theodd-numbered columns A1 and A3 and the arrangement order of theeven-numbered columns A2 and A4 may be opposite to each other. Forexample, the receiving electrodes RX0 and RX1 having the consecutivenumbers are sequentially arranged from top to bottom in the first columnA1, the receiving electrodes RX2 and RX3 having the consecutive numbersare sequentially arranged from bottom to top in the second column A2,the receiving electrodes RX4 and RX5 having the consecutive numbers aresequentially arranged from top to bottom in the third column A3, and thereceiving electrodes RX6 and RX7 having the consecutive numbers aresequentially arranged from bottom to top in the fourth column A4.Herein, although not illustrated in the drawing, the plurality ofdifferent receiving electrodes included in one set may not besequentially arranged in the row or column direction, but may bearranged randomly.

In the meantime, the touch sensor includes the plurality of drivingelectrodes TX, and for example, the plurality of driving electrodes TXmay include a 0^(th) driving electrode TX0 to a fifteenth drivingelectrode TX15. Herein, each driving electrode may be disposed tosatisfy the following arrangement condition.

The plurality of driving electrodes TX is arranged to satisfy thefollowing conditions. 1) With respect to one receiving electrode RX,four different driving electrodes are arranged at the left side, andfour different driving electrodes are arranged at the right side. 2)With respect to each receiving electrode RX, two facing drivingelectrodes TX have the same number. 3) Three driving electrodes havingthe same number are consecutively arranged in the row direction. 4)Eight driving electrodes adjacent to the receiving electrode RX1 in theeven-numbered row are arranged to be symmetric to eight drivingelectrodes adjacent to the receiving electrode RX0 in the odd-numberedrow. 5) A length (horizontal length) of the driving electrodes TXarranged at both edges of each set and the driving electrodes arrangedat the center of each set is half the length (horizontal length) of theother driving electrodes.

FIG. 13 represents raw data when an object, such as a thumb, is incontact with a specific portion of the touch surface of the touch inputdevice having the structure of the touch sensor illustrated in FIG. 12.In particular, FIG. 13 represents raw data in the state where the touchinput device having the structure of the touch sensor illustrated inFIG. 12 is in a floating state.

Referring to FIG. 13, it is confirmed that in the floating state,digital values (or level values) output in a specific part of the rawdata have relatively larger integer values than other parts.

When the raw data illustrated in FIG. 13 is compared with the raw dataillustrated in FIG. 11B, it can be seen that in the floating state, thestructure of the touch sensor illustrated in FIG. 12 has a more LGMimprovement effect than the structure of the touch sensor illustrated inFIG. 10.

FIG. 14 is a graph representing a rough comparison of LGM performancebetween the touch sensors illustrated in FIGS. 10 and 12.

Referring to FIG. 14, in the touch sensor illustrated in FIG. 10, in thegrip state, the relatively large level values among the level values inthe touch area have values of about +250, but in the floating state, therelatively large values have values between −100 to +100.

In the meantime, the touch sensor illustrated in FIG. 12, in the gripstate, the relatively large level values among the level values in thetouch area have level values of about +250, but in the floating state,the relatively large values have values between +70 to +170.

According to the graph of FIG. 14, the touch input device including thetouch sensor illustrated in FIG. 10 is difficult to accurately recognizewhether a touch is input and a touch position in the floating state, butin the touch input device including the touch sensor illustrated in FIG.12, the relatively large level values are +70 or more even in thefloating state, so that the touch input device does not have a problemin recognizing whether a touch is input and a touch position. However,the output of the relatively large level values (+250) like the gripstate or the output of the values similar to the relatively large levelvalues (+250) in the grip state even in the floating state is veryimportant for the touch input device to accurately recognize whether atouch is input and/or a touch position.

Hereinafter, the touch sensor capable of outputting (floating (finaldata)) a signal level value output in a floating state of the touchinput devices including the touch sensor of FIGS. 9 and 10 and the touchsensor of the dual layers (two layers) illustrated in FIGS. 2 and 3, aswell as the touch sensor (one layer) of FIG. 12 to be the same as orsimilar to a signal level value output in a grip state of the touchinput device, and the touch input devices including the same will bedescribed with reference to the drawings in detail.

The touch sensor of the single layer structure or the dual-layerstructure may also be applied to any one of FIGS. 4A-F. That is, themethod to be described below may be applied to the touch sensors havingall currently known structures and touch input devices including thesame. Further, although not illustrated in a separate drawing, one ofthe plurality of driving electrodes and the plurality of receivingelectrodes in the touch sensor of the dual-layer structure may bedisposed between the touch surface and the display panel, and the otherone may be disposed inside the display panel.

Further, the exemplary embodiment of the present invention is notapplied only to the touch input devices including the touch sensorsillustrated in FIGS. 2, 3, 9, 10, and 12, and may also be applied to thetouch input device including the touch sensor of another single layerstructure or dual-layer structure which is not illustrated in thepresent specification. As another specific example, the exemplaryembodiment of the present invention may also be applied to the touchinput devices including the touch sensor illustrated in FIGS. 15 and 16.

FIG. 15 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed in a single layer (one layer),and is an enlarged diagram of only a part.

Referring to FIG. 15, the touch sensor according to the exemplaryembodiment includes the plurality of driving electrodes TX and theplurality of receiving electrodes RX. The plurality of drivingelectrodes TX and the plurality of receiving electrodes RX are arrangedin a matrix form.

The plurality of driving electrodes TX and the plurality of receivingelectrodes RX may be made of a transparent conductive material (forexample, indium tin oxide (ITO) or antimony tin oxide (ATO) made of tinoxide (SnO₂) and indium oxide (In₂O₃)) and the like. However, this ismerely an example, and the driving electrode TX and the receivingelectrode RX may also be formed of other transparent conductivematerials or an opaque conductive material. For example, the drivingelectrode TX and the receiving electrode RX may include at least one ofsilver ink, copper, nano silver, and carbon nanotube (CNT).

Further, the driving electrode TX and the receiving electrode RX may beimplemented with a metal mesh. When the driving electrode TX and thereceiving electrode RX are implemented with the metal mesh, the wiresconnected to the driving electrode TX and the receiving electrode RX mayalso be implemented with the metal mesh, and the driving electrode TXand the receiving electrode RX and the wires may also be integrallyimplemented with the metal mesh. When the driving electrode TX, thereceiving electrode RX, and the wires are integrally implemented withthe metal mesh, a dead zone, such as a space between the electrode andthe wire and/or a space between the electrode and another electrode, inwhich a touch position is not detected, is reduced, so that sensitivityof detecting a touch position may be further improved.

The touch sensor according to the exemplary embodiment is arranged withrespect to the plurality of driving electrodes TX. Accordingly,hereinafter, the arrangement structure of the driving electrodes TXdisposed in columns B1 to B16 will be first described, and then thearrangement structure of the plurality of receiving electrodes RX willbe described.

The plurality of driving electrodes TX is arranged in each of theplurality of columns B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12,B13, B14, B15, and B16. Herein, the plurality of receiving electrodes RXis arranged in the plurality of columns A1, A2, A3, A4, A5, A6, A7, A8,A9, A10, A11, A12, A13, A14, A15, A16 formed between the plurality ofcolumns B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12, B13, B14,B15, and B16, in which the driving electrodes TX is arranged, at theexternal side of the first column B1, and at the external side of the16^(th) column B16.

With respect to each driving electrode TX of the plurality of drivingelectrodes TX, the two receiving electrodes RX adjacent to both sideshave the different characteristic. That is, the two receiving electrodesRX adjacent to both sides with respect to each driving electrode TX havethe different number. Herein, the meaning that the two receivingelectrodes RX are different or the two receiving electrodes RX havedifferent numbers is that the receiving electrodes are not electricallyconnected through wires.

The plurality of driving electrodes TX includes a first set set 1 inwhich 32 driving electrodes including the 0^(th) driving electrode TX0to the 31^(st) driving electrode TX31 are disposed in a firstarrangement, and a second set set 2 in which the 32 driving electrodesincluding the 0^(th) driving electrode TX0 to the 31^(st) drivingelectrode TX31 are disposed in a second arrangement.

The first set set 1 may be provided with two consecutively in the rowdirection and two in the column direction, and the first set set 1located in the even-numbered row may be symmetric to the first set set 1located in the odd-numbered row.

The second set set 2 may be provided with two consecutively in the rowdirection and two in the column direction, and the second set set 2located in the even-numbered row may be symmetric to the second set set2 located in the odd-numbered row.

Further, the plurality of second sets may be disposed at one side of theplurality of first sets.

In the first arrangement of the first set set 1, the 32 drivingelectrodes including the 0th driving electrode TX0 to the 31^(st)driving electrode TX31 are divided and arranged in four columnsconsecutively in the row direction, and in the first column, the drivingelectrodes numbered from 0 to 7 are arranged from top to bottom in theorder of TX0, TX1, TX2, TX3, TX4, TX5, TX6, and TX7, in the secondcolumn, the driving electrodes numbered from 8 to 15 are arranged fromtop to bottom in the order of TX15, TX14, TX13, TX12, TX11, TX10, TX9,and TX8, in the third column, the driving electrodes numbered from 16 to23 are arranged from top to bottom in the order of TX16, TX17, TX18,TX19, TX20, TX21, TX22, and TX23, and in the fourth column, the drivingelectrodes numbered from 24 to 31 are arranged from top to bottom in theorder of TX31, TX30, TX29, TX28, TX27, TX26, TX25, and TX24.

In the second arrangement of the second set set 2, the 32 drivingelectrodes including the 0^(th) driving electrode TX0 to the 31^(st)driving electrode TX31 are divided and arranged in four columnsconsecutively in the row direction, and in the first column, the drivingelectrodes numbered from 16 to 23 are arranged from top to bottom in theorder of TX16, TX17, TX18, TX19, TX20, TX21, TX22, and TX23, in thesecond column, the driving electrodes numbered from 24 to 31 arearranged from top to bottom in the order of TX31, TX30, TX29, TX28,TX27, TX26, TX25, and TX24, in the third column, the driving electrodesnumbered from 0 to 7 are arranged from top to bottom in the order ofTX0, TX1, TX2, TX3, TX4, TX5, TX6, and TX7, and in the fourth column,the driving electrodes numbered from 8 to 15 are arranged from top tobottom in the order of TX15, TX14, TX13, TX12, TX11, TX10, TX9, and TX8.

In the meantime, the touch sensor according to the exemplary embodimentincludes the plurality of receiving electrodes RX, and for example, theplurality of receiving electrodes RX may include a 0^(th) receivingelectrode RX0 to a 15^(th) receiving electrode RX15. Herein, eachreceiving electrode may be disposed so as to satisfy the followingarrangement condition.

The plurality of receiving electrodes RX are disposed so as to satisfythe following conditions. 1) With respect to the eight different drivingelectrodes TX consecutive in the column direction, one receivingelectrode is disposed at the left side and one receiving electrode isdisposed at the right side. 2) With respect to the eight differentdriving electrodes TX consecutive in the column direction, two facingreceiving electrodes RX have different numbers. 3) Two differentreceiving electrodes RX are arranged in the column direction, and eightdifferent receiving electrodes RX are repeatedly arranged in the rowdirection. 4) A length (horizontal length) of the receiving electrodesarranged at both edges in the column direction may be the same as thelength (horizontal length) of the other receiving electrodes, but is notlimited thereto, and a length (horizontal length) of the receivingelectrodes arranged at both edges in the column direction may be halfthe length (horizontal length) of the other receiving electrodes.

FIG. 16 is a diagram illustrating another example in which the touchsensor 10 illustrated in FIG. 1 is formed in a single layer (one layer),and is an enlarged diagram of only a part.

Referring to FIG. 16, the touch sensor according to the exemplaryembodiment includes the plurality of driving electrodes TX and theplurality of receiving electrodes RX. The plurality of drivingelectrodes TX and the plurality of receiving electrodes RX are arrangedin a matrix form.

The plurality of driving electrodes TX and the plurality of receivingelectrodes RX may be made of a transparent conductive material (forexample, indium tin oxide (ITO) or antimony tin oxide (ATO) made of tinoxide (SnO₂) and indium oxide (In₂O₃)) and the like. However, this ismerely an example, and the driving electrode TX and the receivingelectrode RX may also be formed of other transparent conductivematerials or an opaque conductive material. For example, the drivingelectrode TX and the receiving electrode RX may include at least one ofsilver ink, copper, nano silver, and carbon nanotube (CNT).

Further, the driving electrode TX and the receiving electrode RX may beimplemented with a metal mesh. When the driving electrode TX and thereceiving electrode RX are implemented with the metal mesh, the wiresconnected to the driving electrode TX and the receiving electrode RX mayalso be implemented with the metal mesh, and the driving electrode TXand the receiving electrode RX and the wires may also be integrallyimplemented with the metal mesh. When the driving electrode TX, thereceiving electrode RX, and the wires are integrally implemented withthe metal mesh, a dead zone, such as a space between the electrode andthe wire and/or a space between the electrode and another electrode, inwhich a touch position is not detected, is reduced, so that sensitivityof detecting a touch position may be further improved.

The touch sensor according to the exemplary embodiment is arranged withrespect to the plurality of driving electrodes TX. Accordingly,hereinafter, the arrangement structure of the driving electrodes TXdisposed in columns B1 to B16 will be first described, and then thearrangement structure of the plurality of receiving electrodes RX willbe described.

The plurality of driving electrodes TX is arranged in each of theplurality of columns B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12,B13, B14, B15, and B16. Herein, the plurality of receiving electrodes RXis arranged in the plurality of columns A1, A2, A3, A4, A5, A6, A7, A8,A9, A10, A11, A12, A13, A14, A15, A16 formed between the plurality ofcolumns B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, B11, B12, B13, B14,B15, and B16, in which the driving electrodes TX is arranged, at theexternal side of the first column B1, and at the external side of the16^(th) column B16.

With respect to each driving electrode TX of the plurality of drivingelectrodes TX, the two receiving electrodes RX adjacent to both sideshave the different characteristic. That is, the two receiving electrodesRX adjacent to both sides with respect to each driving electrode TX havethe different number. Herein, the meaning that the two receivingelectrodes RX are different or the two receiving electrodes RX havedifferent numbers is that the receiving electrodes are not electricallyconnected through wires.

The plurality of driving electrodes TX includes a set in which 32driving electrodes including a 0^(th) driving electrode TX0 to a 31^(st)driving electrode TX31 are disposed in a first arrangement. Herein, theset may be repeatedly arranged in plural in the row direction and thecolumn direction. The set located in the even-numbered row may besymmetric to the set located in the odd-numbered row.

In the first arrangement of the first set set 1, the 32 drivingelectrodes including the 0th driving electrode TX0 to the 31^(st)driving electrode TX31 are arranged in four columns consecutively in therow direction, and in the first column, the driving electrodes numberedfrom 0 to 7 are arranged from top to bottom in the order of TX0, TX1,TX2, TX3, TX4, TX5, TX6, and TX7, in the second column, the drivingelectrodes numbered from 8 to 15 are arranged from top to bottom in theorder of TX15, TX14, TX13, TX12, TX11, TX10, TX9, and TX8, in the thirdcolumn, the driving electrodes numbered from 16 to 23 are arranged fromtop to bottom in the order of TX16, TX17, TX18, TX19, TX20, TX21, TX22,and TX23, and in the fourth column, the driving electrodes numbered from24 to 31 are arranged from top to bottom in the order of TX31, TX30,TX29, TX28, TX27, TX26, TX25, and TX24.

In the meantime, the touch sensor according to the exemplary embodimentincludes the plurality of receiving electrodes RX, and for example, theplurality of receiving electrodes RX may include a 0^(th) receivingelectrode RX0 to a 31^(st) receiving electrode RX31. Herein, eachreceiving electrode may be disposed so as to satisfy the followingcondition.

The plurality of receiving electrodes RX are disposed so as to satisfythe following arrangement condition. 1) With respect to the eightdifferent driving electrodes TX consecutive in the column direction, onereceiving electrode is disposed at the left side and one receivingelectrode is disposed at the right side. 2) With respect to the eightdifferent driving electrodes TX consecutive in the column direction, twofacing receiving electrodes RX have different numbers. 3) Two differentreceiving electrodes are arranged in the column direction, and 16different receiving electrodes are repeatedly arranged in the rowdirection. 4) A length (horizontal length) of the receiving electrodesarranged at both edges in the column direction may be the same as thelength (horizontal length) of the other receiving electrodes, but is notlimited thereto, and a length (horizontal length) of the receivingelectrodes arranged at both edges in the column direction may be halfthe length (horizontal length) of the other receiving electrodes.

FIG. 17 is one exemplary conceptual diagram in which the touch sensoraccording to the exemplary embodiment of the present invention isconceptualized.

Referring to FIG. 17, the touch sensor according to the exemplaryembodiment of the present invention includes the plurality of drivingelectrodes TX0 to TX7 and the plurality of receiving electrodes RX0 toRX7. Herein, the plurality of driving electrodes TX0 to TX7 and theplurality of receiving electrodes RX0 to RX7 may be formed on the singlelayer as illustrated in FIG. 10 or 12, and may be formed on the duallayers as illustrated in FIG. 2 or 3.

The touch sensor according to the exemplary embodiment of the presentinvention including the plurality of driving electrodes TX0 to TX7 andthe plurality of receiving electrodes RX0 to RX7 includes nodes thatform mutual capacitance (Cm) between the plurality of driving electrodesTX0 to TX7 and the plurality of receiving electrodes RX0 to RX7 andnodes that do not form mutual capacitance (Cm).

For example, in FIG. 17, the nodes that form mutual capacitance (Cm) are(Tx0, Rx0), (Tx0, Rx1), (Tx0, Rx2), (Tx0, Rx3), (Tx1, Rx4), (Tx1, Rx5),(Tx1, Rx6), (Tx1, Rx7), (Tx2, Rx0), (Tx2, Rx1), (Tx2, Rx2), (Tx2, Rx3),(Tx3, Rx4), (Tx3, Rx5), (Tx3, Rx6), (Tx3, Rx7), (Tx4, Rx0), (Tx4, Rx1),(Tx4, Rx2), (Tx4, Rx3), (Tx5, Rx4), (Tx5, Rx5), (Tx5, Rx6), (Tx5, Rx7),(Tx6, Rx0), (Tx6, Rx1), (Tx6, Rx2), (Tx6, Rx3), (Tx7, Rx4), (Tx7, Rx5),(Tx7, Rx6), and (Tx7, Rx7).

The respective receiving electrodes Rx of the nodes that form mutualcapacitance (Cm) may be named as active receiving electrodes Rx.

The detection signal output from the receiving electrode Rx of each ofthe nodes that form mutual capacitance (Cm) include noise information,as well as information about the amount of capacitance changed by atouch of the object. Herein, the noise information includes displaynoise (for example, Zebra noise) information, information about theamount of change according to the change in an image displayed on thedisplay panel, and information on the amount of negative (−) capacitancechanged by an LGM jamming signal generated in a floating state.Accordingly, when the detection signals received from the respectivereceiving electrodes RX of the nodes that form mutual capacitance (Cm)are converted into predetermined level values and output, theinformation on the amount of mutual capacitance changed and the noiseinformation are reflected to the output level value.

In the meantime, in FIG. 17, the nodes that do not form mutualcapacitance (Cm) are Tx0, Rx4), (Tx0, Rx5), (Tx0, Rx6), (Tx0, Rx7),(Tx1, Rx0), (Tx1, Rx1), (Tx1, Rx2), (Tx1, Rx3), (Tx2, Rx4), (Tx2, Rx5),(Tx2, Rx6), (Tx2, Rx7), (Tx3, Rx0), (Tx3, Rx1), (Tx3, Rx2), (Tx3, Rx3),(Tx4, Rx4), (Tx4, Rx5), (Tx4, Rx6), (Tx4, Rx7), (Tx5, Rx0), (Tx5, Rx1),(Tx5, Rx2), (Tx5, Rx3), (Tx6, Rx4), (Tx6, Rx5), (Tx6, Rx6), (Tx6, Rx7),(Tx7, Rx0), (Tx7, Rx1), (Tx7, Rx2), and (Tx7, Rx3).

The respective receiving electrodes Rx of the nodes that do form mutualcapacitance (Cm) may be named as dummy receiving electrodes Rx. Thedummy receiving electrode may be the configuration independently of theplurality of receiving electrodes within the touch sensor, and somereceiving electrodes among the plurality of receiving electrodes mayalso be used as the dummy receiving electrodes in a specific situationand condition.

The detection signal output from the receiving electrode RX of each ofthe nodes that do form mutual capacitance (Cm) does not includeinformation about the amount of capacitance changed by a touch of theobject, but includes only noise information.

Accordingly, the touch input device according to the exemplaryembodiment of the present invention including the touch sensor mayremove the noise information and obtain the information on the amount ofcapacitance changed by the touch of the object by subtracting adetection signal (a second signal) output from the receiving electrodeRx of each of the nodes that do not form mutual capacitance (Cm) from adetection signal (a first signal) output from the receiving electrode Rxof each of the nodes that form mutual capacitance (Cm). A digital value(or a signal level value) corresponding to a final detection signalobtained by subtracting, by the touch input device, the detection signaloutput from the receiving electrode Rx of each of the nodes that do notform mutual capacitance (Cm) from the detection signal output from thereceiving electrode Rx of each of the nodes that form mutual capacitance(Cm) is the value based on the information on the amount of capacitancechanged by the touch of the object. As a result, even though the touchinput device is in the floating state, the digital value that is thesame as or almost similar to the digital value output from the statewhere the touch input device is in the grip state may be output.

Herein, more preferably, the touch input device according to theexemplary embodiment of the present invention may subtract a valueobtained by multiplying a detection signal (a second detection signal)output from the receiving electrode Rx of each of the nodes that do notform mutual capacitance (Cm) and a predetermined factor from a detectionsignal (a first detection signal) output from the receiving electrode Rxof each of the nodes that form mutual capacitance (Cm). The reason whythe factor is multiplied with the second detection signal is tocompensate for a change in a size of the detection signal incurable dueto the difference in the configuration between an active channel and adummy channel. For example, the factor may have a predetermined value,such as 0.8, but is not limited thereto, and the value of the factor maybe changed depending on a design.

Hereinafter, a particular example will be described with reference toFIGS. 18 to 24.

FIG. 18 is a conceptual diagram in which a touch sensor according to anexemplary embodiment of the present invention illustrated in FIG. 12 isconceptualized.

Referring to FIG. 18, the touch sensor according to the exemplaryembodiment of the present invention includes the plurality of drivingelectrodes TX0 to TX7 and the plurality of receiving electrodes RX0 toRX7. At least a part of the plurality of receiving electrodes RX0 to RX7is used as dummy receiving electrodes Rx. Herein, the receivingelectrodes among the plurality of receiving electrodes RX0 to RX7 usedas the dummy receiving electrodes are determined according to thedriving electrode to which the driving signal is applied.

For example, when the driving signal is applied to the 0^(th) drivingelectrode TX0, the fourth receiving electrode Rx4, the fifth receivingelectrode Rx5, the sixth receiving electrode Rx6, and the seventhreceiving electrode Rx7 among the plurality of receiving electrodes Rx0to Rx7 are used as the dummy receiving electrodes. That is, when thedriving signal is applied to the 0^(th) driving electrode TX0, thefourth, fifth, sixth, and seventh receiving electrodes Rx4, Rx5, Rx6,and Rx7 are the receiving electrodes that do not form the mutualcapacitance (Cm) with the 0^(th) driving electrode Tx0, and the 0^(th),first, second, and third receiving electrodes Rx0, Rx1, Rx2, and Rx3 arethe receiving electrodes that form the mutual capacitance (Cm) with the0th driving electrode Tx0.

When the driving signal is applied to the first driving electrode Tx1,the fourth, fifth, sixth, and seventh receiving electrodes Rx4, Rx5,Rx6, and Rx7 are the receiving electrodes that form the mutualcapacitance (Cm) with the first driving electrode Tx1, and the 0^(th),first, second, and third receiving electrodes Rx0, Rx1, Rx2, and Rx3 arethe receiving electrodes that do not form the mutual capacitance (Cm)with the first driving electrode Tx1.

The touch input device according to the exemplary embodiment of thepresent invention including the touch sensor may remove the noiseinformation, particularly, the information on the amount of negative (−)capacitance changed by the LGM jamming signal by subtracting a detectionsignal output from the receiving electrode Rx of each of the nodes thatdo not form mutual capacitance (Cm) from a detection signal output fromthe receiving electrode Rx of each of the nodes that form mutualcapacitance (Cm). Herein, the touch input device according to theexemplary embodiment of the present invention including the touch sensormay subtract a value obtained by multiplying a detection signal outputfrom the receiving electrode Rx of each of the nodes that do not formmutual capacitance (Cm) and a predetermined factor from a detectionsignal output from the receiving electrode Rx of each of the nodes thatform mutual capacitance (Cm).

FIG. 19 is a diagram illustrating an example for describing electrodesused as dummy receiving electrodes among the plurality of receivingelectrodes of the touch sensor illustrated in FIG. 12.

Referring to FIG. 19, when the driving signal is applied to the firstdriving electrode Tx1, the fourth, fifth, sixth, and seventh receivingelectrodes Rx4, Rx5, Rx6, and Rx7 are the receiving electrodes Active Rxthat form the mutual capacitance (Cm) with the first driving electrodeTx1, and the 0^(th), first, second, and third receiving electrodes Rx0,Rx1, Rx2, and Rx3 are the dummy receiving electrodes Dummy Rx that donot form the mutual capacitance (Cm) with the first driving electrodeTx1.

The detection signals output from the active receiving electrodes Rx4,Rx5, Rx6, Rx7 include noise information, as well as the information onthe amount of capacitance changed by the touch of the object. Herein,the noise information includes display noise (for example, Zebra noise),information about the amount of change according to the change in animage displayed on the display panel, and information on the amount ofnegative (−) capacitance changed by an LGM jamming signal generated in afloating state. Accordingly, when the touch detection unit of the touchinput device converts the detection signals output from the activereceiving electrodes Rx4, Rx5, Rx6, and Rx7 into predetermined levelvalues and outputs the converted level value, the information on theamount of mutual capacitance changed and the noise information arereflected to the output level value.

On the other hand, the detection signal output from the dummy receivingelectrodes Rx0, Rx1, Rx2, and Rx3 includes little information on theamount of capacitance changed by the touch of the object, but includesonly the noise information.

FIGS. 20A-C are diagrams illustrating an example of raw data output inthe touch input device including the touch sensor according to theexemplary embodiment of the present invention illustrated in FIG. 12.

The raw data illustrated in FIG. 20A is the same as the raw dataillustrated in FIG. 13. That is, the raw data illustrated in FIG. 13 isthe raw data based on the detection signal output from the receivingelectrode (active Rx) of each of the nodes that form mutual capacitance(Cm) in the touch sensor illustrated in FIG. 12, and FIG. 20B is the rawdata based on the detection signal output from the receiving electrode(dummy Rx) of each of the nodes that do not form mutual capacitance (Cm)in the touch sensor illustrated in FIG. 12.

FIG. 20C is the raw data when the detection signal output from thereceiving electrode (dummy Rx) of each of the nodes that do not formmutual capacitance (Cm) is subtracted from the detection signal outputfrom the receiving electrode (active Rx) of each of the nodes that formmutual capacitance (Cm).

In the comparison between the raw data of FIG. 20C and the raw data ofFIG. 20A, it can be seen that the digital values (or level values)within the touch area in which the touch is actually input by theobject) in the raw data of FIG. 20C are relatively larger than thedigital value (or level value) of the corresponding portion of FIG. 20A.That is, it can be seen that the central portion of the touch area has alevel value of about +250 or more, so that it can be confirmed that evenin the floating state, the touch input device may obtain the same orsimilar level values as those in the grip state.

Although the raw data is not separately illustrated, it is expected thatthe raw data obtained by subtracting a value obtained by multiplying thedetection signal output from the receiving electrode (dummy Rx) of eachof the nodes that do not form mutual capacitance (Cm) and apredetermined factor from the detection signal output from the receivingelectrode (active Rx) of each of the nodes that form mutual capacitance(Cm) is similar to the raw data of FIG. 20C.

FIG. 21 is a conceptual diagram illustrating a touch sensor according toan exemplary embodiment of the present invention having a bridgestructure is conceptualized.

Referring to FIG. 21, the touch sensor according to the exemplaryembodiment of the present invention includes the plurality of drivingelectrodes TX0 to TX7 and the plurality of receiving electrodes RX0 toRX3. Further, the touch sensor according to the exemplary embodiment ofthe present invention includes the plurality of dummy receivingelectrodes DRx0 to DRx3.

Mutual capacitance (Cm) is formed between the plurality of drivingelectrodes TX0 to TX7 and the plurality of receiving electrodes RX0 toRX3, but mutual capacitance (Cm) is not formed between the plurality ofdriving electrodes TX0 to TX7 and the plurality of dummy receivingelectrodes DRx0 to DRx3. Herein, actually, mutual capacitance (Cm) maybe marginally formed between the plurality of driving electrodes TX0 toTX7 and the plurality of dummy receiving electrodes DRx0 to DRx3, butthe marginal mutual capacitance is ignorable when whether the touch isinput is detected.

The touch input device according to the exemplary embodiment of thepresent invention including the touch sensor may remove the noiseinformation, particularly, the information on the amount of negative (−)capacitance changed by the LGM jamming signal by subtracting a detectionsignal output from the receiving electrode Rx of each of the nodes thatdo not form mutual capacitance (Cm) from a detection signal output fromthe receiving electrode Rx of each of the nodes that form mutualcapacitance (Cm). Herein, the touch input device according to theexemplary embodiment of the present invention including the touch sensormay also subtract a value obtained by multiplying a detection signaloutput from the receiving electrode Rx of each of the nodes that do notform mutual capacitance (Cm) and a predetermined factor from a detectionsignal output from the receiving electrode Rx of each of the nodes thatform mutual capacitance (Cm).

FIG. 22 is a configuration diagram of a touch sensor according to anexample to which the conceptual diagram of the touch sensor illustratedin FIG. 21 is applicable.

Referring to FIG. 22, the plurality of driving electrodes Tx0, Tx1, Tx2,and Tx3 is arranged in parallel in the horizontal direction, and theplurality of receiving electrodes Rx0 and Rx1 is arranged in parallel inthe vertical direction.

Each of the plurality of driving electrodes Tx0, Tx1, Tx2, and Tx3 andthe plurality of receiving electrodes Rx0 and Rx1 has a diamond shape,and the two adjacent driving electrodes and the two adjacent receivingelectrodes are electrically connected with each other through aconductive connection unit.

The plurality of driving electrodes Tx0, Tx1, Tx2, and Tx3 and theplurality of receiving electrodes Rx0 and Rx1 may be implemented with ametal mesh. Herein, the conductive connection unit connecting theplurality of driving electrodes Tx0, Tx1, Tx2, and Tx3 may also beimplemented with a metal mesh. The conductive connection unit connectingthe plurality of driving electrodes Tx0, Tx1, Tx2, and Tx3 may also beimplemented with a metal mesh, and may also be implemented in aconductive trace.

Each of the plurality of driving electrodes Tx0, Tx1, Tx2, and Tx3 andthe plurality of receiving electrodes Rx0 and Rx1 has an electricallyinsulated dummy pattern inside thereof. The dummy pattern may be formedin order to reduce base capacitance of each receiving electrode anddriving electrode. After the pattern of each driving electrode and thepattern of each receiving electrode are formed of the metal mesh, thedummy pattern may be formed by cutting a part of the metal mesh in eachpattern.

In the plurality of dummy receiving electrodes DRx0 and DRx1, the dummypatterns inside the plurality of receiving electrodes Rx0 and Rx1 may beelectrically connected. Since the plurality of receiving electrodes Rx0and Rx1 are very adjacent to the plurality of driving electrodes Tx0,Tx1, Tx2, and Tx3, the mutual capacitance (Cm) is formed, but theplurality of dummy receiving electrodes DRx0 and DRx1 are relativelyspaced apart from the plurality of driving electrodes Tx0, Tx1, Tx2, andTx3, so that the mutual capacitance (Cm) is formed small which isnegligible.

FIG. 23 is another conceptual diagram in which the touch sensoraccording to the exemplary embodiment of the present invention havingthe bridge structure is conceptualized.

Referring to FIG. 23, the touch sensor according to the exemplaryembodiment of the present invention includes the plurality of drivingelectrodes TX0 to TX3 and the plurality of receiving electrodes RX0 toRX7. Further, the touch sensor according to the exemplary embodiment ofthe present invention includes the plurality of dummy driving electrodesDTx0 to DTx3.

Mutual capacitance (Cm) is formed between the plurality of drivingelectrodes TX0 to TX3 and the plurality of receiving electrodes RX0 toRX7, but mutual capacitance (Cm) is not formed between the plurality ofdummy driving electrodes DTX0 to DTX3 and the plurality of receivingelectrodes Rx0 to Rx7. Herein, actually, mutual capacitance may bemarginally formed between the plurality of dummy driving electrodes DTX0to DTX3 and the plurality of receiving electrodes Rx0 to Rx7, but themarginal mutual capacitance is ignorable when the touch is detected.

The touch input device according to the exemplary embodiment of thepresent invention including the touch sensor may remove the noiseinformation, particularly, the information on the amount of negative (−)capacitance changed by the LGM jamming signal by subtracting a detectionsignal output from the receiving electrode Rx of each of the nodes thatdo not form mutual capacitance (Cm) from a detection signal output fromthe receiving electrode Rx of each of the nodes that form mutualcapacitance (Cm). Herein, the touch input device according to theexemplary embodiment of the present invention may subtract a valueobtained by multiplying a detection signal output from the receivingelectrode Rx of each of the nodes that do not form mutual capacitance(Cm) and a predetermined factor from a detection signal output from thereceiving electrode Rx of each of the nodes that form mutual capacitance(Cm).

FIG. 24 is a configuration diagram of a touch sensor according to anexample to which the conceptual diagram of the touch sensor illustratedin FIG. 23 is applicable.

Referring to FIG. 24, the plurality of receiving electrodes Rx0, Rx1,Rx2, and Rx3 is arranged in parallel in the horizontal direction, andthe plurality of driving electrodes Tx0 and Tx1 is arranged in parallelin the vertical direction.

Each of the plurality of receiving electrodes Rx0, Rx1, Rx2, and Rx3 andthe plurality of driving electrodes Tx0 and Tx1 has a diamond shape, andthe two adjacent driving electrodes and the two adjacent receivingelectrodes are electrically connected with each other through aconductive connection part.

The plurality of receiving electrodes Rx0, Rx1, Rx2, and Rx3 and theplurality of driving electrodes Tx0 and Tx1 may be implemented with ametal mesh. Herein, the conductive connection unit connecting theplurality of receiving electrodes Rx0, Rx1, Rx2, and Rx3 may also beimplemented with a metal mesh. The conductive connection unit connectingthe plurality of receiving electrodes Rx0, Rx1, Rx2, and Rx3 may also beimplemented with a metal mesh, and may also be implemented in aconductive trace.

Each of the plurality of receiving electrodes Rx0, Rx1, Rx2, and Rx3 andthe plurality of driving electrodes Tx0 and Tx1 has an electricallyinsulated dummy pattern inside thereof. The dummy pattern may be formedin order to reduce base capacitance of each receiving electrode anddriving electrode. After the pattern of each driving electrode and thepattern of each receiving electrode are formed in the metal mesh, thedummy pattern may be formed by cutting a part of the metal mesh in eachpattern.

In the plurality of dummy driving electrodes DTx0 and DTx1, the dummypatterns inside the plurality of driving electrodes Tx0 and Tx1 may beelectrically connected. Since the plurality of driving electrodes Tx0and Tx1 are very adjacent to the plurality of receiving electrodes Rx0,Rx1, Rx2, and Rx3, the mutual capacitance (Cm) is formed, but theplurality of dummy driving electrodes DTx0 and DTx1 are relativelyspaced apart from the plurality of driving electrodes Tx0, Tx1, Tx2, andTx3, so that the mutual capacitance (Cm) is formed small which isnegligible.

FIG. 25 is a configuration diagram of a touch sensor according toanother example to which the conceptual diagram of the touch sensorillustrated in FIG. 21 is applicable.

Referring to FIG. 25, the plurality of receiving electrodes Rx0, Rx1,and Rx2 is arranged in parallel in the horizontal direction, and theplurality of driving electrodes Tx0, Tx1, and TX2 is arranged inparallel in the vertical direction. Herein, the horizontal direction andthe vertical direction may be changed.

Each of the plurality of receiving electrodes Rx0, Rx1, and Rx2 and theplurality of driving electrodes Tx0, Tx1, and Tx2 has a bar shape.

The plurality of receiving electrodes Rx0, Rx1, and Rx2 is formed on afirst layer, and the plurality of driving electrodes Tx0, Tx1, and Tx2is formed on a second layer. The first layer and the second layer arenot disposed on the same plane. For example, the first layer may bedisposed on the second layer. An insulating layer may be disposedbetween the first layer and the second layer.

The plurality of receiving electrodes Rx0, Rx1, and Rx2 and theplurality of driving electrodes Tx0, Tx1, and Tx2 may be implementedwith a metal mesh or a conductive metal.

The touch sensor illustrated in FIG. 25 includes the plurality of dummyreceiving electrodes DRx0, DRx1, and DRx2. The plurality of dummyreceiving electrodes DRx0, DRx1, and DRx2 may be formed together on thelayer on which the plurality of receiving electrodes Rx0, Rx1, and Rx2are formed, and one dummy receiving electrode DRx0, DRx1, and DRx2 maybe disposed between the plurality of receiving electrodes Rx0, Rx1, andRx2.

Each of the driving electrodes Tx0, Tx1, and Tx2 includes a first areaoverlapping each of the receiving electrodes Rx0, Rx1, and Rx2 and asecond area overlapping each of the dummy receiving electrodes DRx0,DRx1, and DRx2. Herein, an area of the first area is larger than an areaof the second area. Particularly, the area of the second area ispreferably formed as small as possible. This is for the purpose ofreducing mutual capacitance between the dummy receiving electrode andthe driving electrode as much as possible. Otherwise, under thecondition in which the receiving electrode and the dummy receivingelectrode have the same shape, a width of the first area overlapping thereceiving electrode in each driving electrode may also be designed to belarger than a width of the second area overlapping the dummy receivingelectrode.

Since the plurality of driving electrodes Tx0, Tx1, and Tx2 have arelatively large area overlapping the plurality of receiving electrodesRx0, Rx1, and Rx2, relatively large mutual capacitance (Cm) is formed,but the plurality of dummy receiving electrodes DRx0, DRx1, DRx2relatively little overlaps the plurality of driving electrodes Tx0, Tx1,and Tx2, so that the mutual capacitance (Cm) between the dummy receivingelectrode and the driving electrode is formed to be small which isnegligible.

FIG. 26 is a configuration diagram of a touch sensor according toanother example to which the conceptual diagram of the touch sensorillustrated in FIG. 23 is applicable.

Referring to FIG. 26, the plurality of receiving electrodes Rx0, Rx1,and Rx2 is arranged in parallel in the vertical direction, and theplurality of driving electrodes Tx0, Tx1, and TX2 is arranged inparallel in the horizontal direction. Herein, the horizontal directionand the vertical direction may be changed.

Each of the plurality of receiving electrodes Rx0, Rx1, and Rx2 and theplurality of driving electrodes Tx0, Tx1, and Tx2 has a bar shape.

The plurality of receiving electrodes Rx0, Rx1, and Rx2 is formed on afirst layer, and the plurality of driving electrodes Tx0, Tx1, and Tx2is formed on a second layer. The first layer and the second layer arenot disposed on the same plane. For example, the first layer may bedisposed on the second layer. An insulating layer may be disposedbetween the first layer and the second layer.

The plurality of receiving electrodes Rx0, Rx1, and Rx2 and theplurality of driving electrodes Tx0, Tx1, and Tx2 may be implementedwith a metal mesh or a conductive metal.

The touch sensor illustrated in FIG. 26 includes the plurality of dummydriving electrodes DTx0, DTx1, and DTx2. The plurality of dummy drivingelectrodes DTx0, DTx1, and DTx2 may be formed together on the layer onwhich the plurality of driving electrodes Tx0, Tx1, and Tx2 are formed,and one dummy driving electrode DTx0, DTx1, and DTx2 may be disposedbetween the plurality of driving electrodes Tx0, Tx1, and Tx2.

Each of the receiving electrodes Rx0, Rx1, and Rx2 includes a first areaoverlapping each of the driving electrodes Tx0, Tx1, and Tx2 and asecond area overlapping each of the dummy driving electrodes DTx0, DTx1,and DTx2. Herein, an area of the first area is larger than an area ofthe second area. Particularly, the area of the second area is preferablyformed as small as possible. This is for the purpose of reducing mutualcapacitance between the dummy driving electrode and the receivingelectrode as much as possible. Otherwise, under the condition in whichthe receiving electrodes have the same shape, a width of the first areain which the driving electrode overlaps the receiving electrode may alsobe designed to be larger than a width of the second area in which thedummy driving electrode overlaps the receiving electrode.

Since each of the plurality of driving electrodes Tx0, Tx1, and Tx2 hasa relatively large area overlapping each of the plurality of receivingelectrodes Rx0, Rx1, and Rx2, relatively large mutual capacitance (Cm)is formed, but each of the plurality of dummy driving electrodes DTx0,DTx1, and DTx2 relatively little overlaps each of the plurality ofreceiving electrodes Rx0, Rx1, and Rx2, so that the mutual capacitance(Cm) between the dummy driving electrode and the receiving electrode isformed to be small which is negligible.

When the present applicant performed the test using a conductive rodhaving a diameter of 15 phi in the state where the touch input deviceincluding the touch sensor illustrated in FIG. 10 is in the grip stateand the state where the touch input device including the touch sensorillustrated in FIG. 10 is in the floating state, the present applicantcould obtain raw data in each state. The obtained raw data isillustrated in FIG. 27, and the left raw data of FIG. 27 is the raw datain the grip state, and the right raw data of FIG. 27 is the raw data inthe floating state. When the left and right raw data of FIG. 27 arecompared, it can be seen that the level values of the touch area areremarkably decreased by the LGM jamming signal generated in the floatingstate.

Further, the present applicant performed the test using the conductiverod having a diameter of 15 phi in the state where the touch inputdevice including the touch sensor illustrated in FIG. 12 is in the gripstate and the state where the touch input device including the touchsensor illustrated in FIG. 12 is in the floating state, and as describedwith reference to FIGS. 20A-C, the raw data of each state could beobtained by subtracting the detection signal output from the receivingelectrode that does not form mutual capacitance with the drivingelectrode from the detection signal output from the receiving electrodethat forms mutual capacitance with the driving electrode. The obtainedraw data is illustrated in FIG. 28, and the left raw data of FIG. 28 isthe raw data in the grip state, and the right raw data of FIG. 28 is theraw data in the floating state. When the left and right raw data of FIG.28 is compared, it can be seen that the deviation of the level valueswithin the touch area in the grip state and the floating state isconsiderably low compared to FIG. 27.

Further, when the present applicant performed the test using aconductive rod having a diameter of 20 phi in the state where the touchinput device including the touch sensor illustrated in FIG. 10 is in thegrip state and the state where the touch input device including thetouch sensor illustrated in FIG. 10 is in the floating state, thepresent applicant could obtain raw data in each state. The obtained rawdata is illustrated in FIG. 29, and the left raw data of FIG. 29 is theraw data in the grip state, and the right raw data of FIG. 29 is the rawdata in the floating state. When the left and right raw data of FIG. 29is compared, it can be seen that the level values of the touch area areremarkably decreased by the LGM jamming signal generated in the floatingstate.

Further, the present applicant performed the test using the conductiverod having a diameter of 15 phi in the state where the touch inputdevice including the touch sensor illustrated in FIG. 12 is in the gripstate and the state where the touch input device including the touchsensor illustrated in FIG. 12 is in the floating state, and as describedwith reference to FIGS. 20A-C, the raw data of each state could beobtained by subtracting the detection signal output from the receivingelectrode that does not form mutual capacitance with the drivingelectrode from the detection signal output from the receiving electrodethat forms mutual capacitance with the driving electrode. The obtainedraw data is illustrated in FIG. 30, and the left raw data of FIG. 30 isthe raw data in the grip state, and the right raw data of FIG. 30 is theraw data in the floating state. When the left and right raw data of FIG.30 is compared, it can be seen that the deviation of the level valueswithin the touch area is small in the grip state and the floating state,and there is even a part where the level value in the floating state islarger.

Furthermore, when the applicant performed the test using a thumb of anactual person in the state where the touch input device including thetouch sensor illustrated in FIG. 10 is in the grip state and the statewhere the touch input device including the touch sensor illustrated inFIG. 10 is in the floating state, the applicant could obtain raw data ineach state. The obtained raw data is illustrated in FIG. 31, and theleft raw data of FIG. 31 is the raw data in the grip state, and theright raw data of FIG. 31 is the raw data in the floating state. Whenthe left and right raw data of FIG. 31 is compared, it can be seen thatthe level values of the touch area are remarkably decreased by the LGMjamming signal generated in the floating state.

Further, the present applicant performed the test using the conductiverod having a diameter of 15 phi in the state where the touch inputdevice including the touch sensor illustrated in FIG. 12 is in the gripstate and the state where the touch input device including the touchsensor illustrated in FIG. 12 is in the floating state, and as describedwith reference to FIGS. 20A-C, the raw data of each state could beobtained by subtracting the detection signal output from the receivingelectrode that does not form mutual capacitance with the drivingelectrode from the detection signal output from the receiving electrodethat forms mutual capacitance with the driving electrode. The obtainedraw data is illustrated in FIG. 32, and the left raw data of FIG. 32 isthe raw data in the grip state, and the right raw data of FIG. 32 is theraw data in the floating state. When the left and right raw data of FIG.32 is compared, it can be seen that there is almost no deviation betweenthe level values within the touch area in the grip state and thefloating state.

The touch input device including the touch sensor according to theexemplary embodiment of the present invention has a unique advantage inthat it is possible to discriminate two or more multi-touches even inthe floating state.

FIG. 33 is a diagram illustrating the case where the touch input devicesin the related art cannot recognize multi-touches by multiple objectswhen the touch input devices in the related art are in the floatingstate.

The situation of FIG. 33 may be, for example, the case where a usertouches a touch surface of a touch input device with two fingers in thestate where the touch input device in the related art is mounted on acradle in a vehicle.

As illustrated in the left drawing of FIG. 33, the touch input devicesin the related art do not recognize one touch between two multi-touches,or as illustrated in the right drawing of FIG. 33, the user inputs twotouches, but the touch input device recognizes the two touches as threeor four multi-touches.

FIG. 34A represents the raw data when a multi-touch is performed afterthe touch input device including the touch sensor of the dual layersillustrated in FIG. 3 is placed in the floating state. Referring to FIG.34A, the level values of the regions multi-touched are relatively low bythe LGM jamming signal generated in the floating state. When a referencelevel value for determining whether a touch is input is set to 65, aportion touched relatively above is not recognized as a touch, and onlya portion touched relatively below may be recognized as a touch, so thatthere occurs a phenomenon in which one of the two touches is notrecognized.

FIG. 34B represents the raw data when a multi-touch is performed afterthe touch input device including the touch sensor illustrated in FIG. 10is placed in the floating state. Referring to FIG. 34B, there is aportion in which the level values of the regions multi-touched arerelatively low by the LGM jamming signal generated in the floatingstate. When a reference level value for determining whether a touch isinput is set to 65, three or more touches may be recognized as present.

FIG. 34C represents the raw data in the case where a multi-touch isperformed after the touch input device is placed in the floating statewhen the method of subtracting the detection signal output from thereceiving electrode that does not form mutual capacitance with thedriving electrode from the detection signal output from the receivingelectrode that forms mutual capacitance with the driving electrode isapplied to the touch input device including the touch sensor illustratedin FIG. 12 as described with reference to FIGS. 20A-C. Referring to FIG.34C, since the relatively large positive level values are output fromthe multi-touched two parts, the touch input device may accuratelyrecognize the multi-touch of the user as the multi-touch.

Further, the touch input device including the touch sensor according tothe exemplary embodiment of the present invention has a unique advantagein that it is possible to discriminate a third touch touched togetherwith a cross touch.

FIG. 35 is a diagram illustrating the case where a third touch is notrecognized when a cross touch and the third touch are input together totouch surfaces of the touch input devices in the related art.

The touch input devices in the related art could not recognize a thirdtouch among two cross touches by two fingers of the left hand and thethird touch by one finger of the right hand as illustrated in the leftand right drawings of FIG. 35.

FIG. 36A is the raw data when a cross touch and a third touch are inputto the touch input device including the touch sensor of the dual layersillustrated in FIG. 3. Referring to FIG. 36A, a level value in a circleregion corresponding to the third touch is relatively low compared tothe cross touched portions. Accordingly, the touch input device does notrecognize the third touch.

FIG. 36B represents the raw data when a cross touch and the third touchare input to the touch input device including the touch sensorillustrated in FIG. 10. Referring to FIG. 36B, a level value in a circleregion corresponding to the third touch is relatively low compared tothe cross touched portions. Accordingly, the touch input device does notrecognize the third touch.

FIG. 36C represents the raw data in the case where a cross touch and athird touch are input to the touch input device when the method ofsubtracting the detection signal output from the receiving electrodethat does not form mutual capacitance with the driving electrode fromthe detection signal output from the receiving electrode that formsmutual capacitance with the driving electrode is applied to the touchinput device including the touch sensor illustrated in FIG. 12 asdescribed with reference to FIGS. 20A-C. Referring to FIG. 36C, it canbe seen that the relatively large positive (+) level values are outputfrom the cross-touched two parts, and the relatively large positive (+)level values are output from a circle region corresponding to the thirdtouch. That is, the touch input device may recognize both the crosstouch and the third touch together.

The aforementioned characteristic, structure, effect, and the likedescribed in the exemplary embodiments are included in one exemplaryembodiment of the present invention, and are not essentially limited toonly one exemplary embodiment. Further, the characteristic, structure,effect, and the like described in each exemplary embodiment may becarried out in other exemplary embodiments through combination ormodification by those skilled in the art to which the exemplaryembodiments pertain. Accordingly, it shall be construed that contentsrelating to the combination and the modification are included in thescope of the present invention.

In addition, although the exemplary embodiments have been describedabove, these are only examples, and do not limit the present invention,and those skilled in the art will know that various modifications andapplications which are not exemplified above are possible within thescope without departing from the essential characteristics of thepresent exemplary embodiment. For example, each component specificallypresented in the exemplary embodiment may be modified and implemented.Further, it should be interpreted that the differences in relation tothe modification and the application are included in the scope of thepresent invention defined in the accompanying claims.

1. A touch input device including a touch surface, comprising: a displaypanel disposed under the touch surface; a touch sensor which is disposedunder the touch surface and includes a plurality of driving electrodes,a plurality of receiving electrodes, and a plurality of dummy receivingelectrodes; and a touch detection unit configured to detect a touchposition of an object input to the touch surface based on a detectionsignal output from the plurality of receiving electrodes of the touchsensor, wherein the touch detection unit detects the touch position ofthe object input to the touch surface by subtracting a second detectionsignal output from a dummy receiving electrode that does not form mutualcapacitance with a predetermined driving electrode among the pluralityof dummy receiving electrodes from a first detection signal output froma predetermined receiving electrode that forms mutual capacitance withthe predetermined driving electrode among the plurality of receivingelectrodes, wherein the first detection signal includes information onthe amount of mutual capacitance changed between the predetermineddriving electrode and the predetermined receiving electrode and noiseinformation, the second detection signal includes the noise information,and the noise information includes display noise information of thedisplay panel, noise information by a conversion of an image displayedon the display panel, and information on the amount of negative (−)capacitance changed by an LGM jamming signal generated by couplingbetween the object and the predetermined driving electrode. 2.-3.(canceled)
 4. The touch input device of claim 1, wherein the touchsensor includes a first layer on which the plurality of drivingelectrodes is disposed and a second layer on which the plurality ofreceiving electrodes is disposed, the plurality of dummy receivingelectrodes is disposed on the second layer, and is disposed so as to beelectrically insulated from the plurality of receiving electrodes, thedriving electrode includes a first area overlapping the receivingelectrode and a second area overlapping the dummy receiving electrode,and the first area is larger than the second area.
 5. (canceled)
 6. Thetouch input device of claim 1, wherein the touch detection unit detectsthe touch position of the object input to the touch surface bysubtracting a value obtained by multiplying the second detection signaland a predetermined factor from the first detection signal.
 7. A touchinput device including a touch surface, comprising: a display paneldisposed under the touch surface; a touch sensor which is disposed underthe touch surface and includes a plurality of driving electrodes, aplurality of receiving electrodes, and a plurality of dummy drivingelectrodes; and a touch detection unit configured to detect a touchposition of an object input to the touch surface based on a detectionsignal output from the plurality of receiving electrodes of the touchsensor, wherein the touch detection unit detects the touch position ofthe object input to the touch surface by subtracting a second detectionsignal output from a predetermined receiving electrode that does notform mutual capacitance with a predetermined dummy driving electrodeamong the plurality of receiving electrodes from a first detectionsignal output from a predetermined receiving electrode that forms mutualcapacitance with a predetermined driving electrode among the pluralityof receiving electrodes, wherein the first detection signal includesdisplay noise information of the display panel, noise information by aconversion of an image displayed on the display panel, and informationon the amount of mutual capacitance changed between the predetermineddriving electrode and the predetermined receiving electrode and noiseinformation, the second detection signal includes the noise information,and the noise information includes information on the amount of negative(−) capacitance changed by an LGM jamming signal generated by couplingbetween the object and the predetermined driving electrode. 8.-9.(canceled)
 10. The touch input device of claim 7, wherein the touchsensor includes a first layer on which the plurality of drivingelectrodes is disposed and a second layer on which the plurality ofreceiving electrodes is disposed, the plurality of dummy drivingelectrodes is disposed on the first layer, and is disposed so as to beelectrically insulated from the plurality of driving electrodes, thereceiving electrode includes a first area overlapping the drivingelectrode and a second area overlapping the dummy driving electrode, andthe first area is larger than the second area.
 11. (canceled)
 12. Thetouch input device of claim 7, wherein the touch detection unit detectsthe touch position of the object input to the touch surface bysubtracting a value obtained by multiplying the second detection signaland a predetermined factor from the first detection signal.
 13. A touchinput device including a touch surface, comprising: a display paneldisposed under the touch surface; a touch sensor which is disposed underthe touch surface and includes a plurality of driving electrodes and aplurality of receiving electrodes; and a touch detection unit configuredto detect a touch position of an object input to the touch surface basedon a detection signal output from the plurality of receiving electrodesof the touch sensor, wherein the touch detection unit detects the touchposition of the object input to the touch surface by subtracting asecond detection signal output from another predetermined receivingelectrode that does not form mutual capacitance with a predetermineddriving electrode among the plurality of receiving electrodes from afirst detection signal output from a predetermined receiving electrodethat forms mutual capacitance with the predetermined driving electrodeamong the plurality of receiving electrodes, wherein the first detectionsignal includes information on the amount of mutual capacitance changedbetween the predetermined driving electrode and the predeterminedreceiving electrode and noise information, the second detection signalincludes the noise information, and the noise information includesdisplay noise information of the display panel, noise information by aconversion of an image displayed on the display panel, and informationon the amount of negative (−) capacitance changed by an LGM jammingsignal generated by coupling between the object and the predetermineddriving electrode. 14.-15. (canceled)
 16. The touch input device ofclaim 13, wherein the plurality of driving electrodes and the pluralityof receiving electrodes are disposed on the same layer so as to beelectrically insulated from each other, and wherein one or more drivingelectrodes that are not electrically connected with the predetermineddriving electrode are disposed between the predetermined drivingelectrode and the another predetermined receiving electrode. 17.(canceled)
 18. The touch input device of claim 13, wherein the touchdetection unit detects the touch position of the object input to thetouch surface by subtracting a value obtained by multiplying the seconddetection signal and a predetermined factor from the first detectionsignal. 19.-22. (canceled)
 23. A touch sensor, comprising: a pluralityof driving electrodes; a plurality of receiving electrodes which iselectrically insulated from the plurality of driving electrodes, andforms mutual capacitance with the plurality of driving electrodes; and aplurality of dummy receiving electrodes which is electrically insulatedfrom the plurality of driving electrodes and the plurality of receivingelectrodes, and does not form mutual capacitance with the plurality ofdriving electrodes, wherein when a driving signal is applied through apredetermined driving electrode among the plurality of drivingelectrodes, a first detection signal output from a predeterminedreceiving electrode among the plurality of receiving electrodes includesinformation on the amount of mutual capacitance changed between thepredetermined driving electrode and the predetermined receivingelectrode and noise information, a second detection signal output from apredetermined dummy receiving electrode among the plurality of dummyreceiving electrodes includes the noise information, and the noiseinformation includes display noise information of the display panel,noise information by a conversion of an image displayed on the displaypanel, and information on the amount of negative (−) capacitance changedby an LGM jamming signal generated by coupling between an object and thepredetermined driving electrode.
 24. A touch sensor, comprising: aplurality of driving electrodes; a plurality of dummy driving electrodeselectrically insulated from the plurality of driving electrodes; and aplurality of receiving electrodes which is electrically insulated fromthe plurality of driving electrodes and the plurality of dummy drivingelectrodes, forms mutual capacitance with the plurality of drivingelectrodes, and does not form the mutual capacitance with the pluralityof dummy driving electrodes, wherein a predetermined receiving electrodeamong the plurality of receiving electrodes outputs a first detectionsignal and a second detection signal, the first detection signalincludes information on the amount of mutual capacitance changed betweenthe predetermined receiving electrode and a predetermined drivingelectrode among the plurality of driving electrodes and noiseinformation, a second detection signal includes the noise information,and the noise information includes display noise information of thedisplay panel, noise information by a conversion of an image displayedon the display panel, and information on the amount of negative (−)capacitance changed by an LGM jamming signal generated by couplingbetween an object and the predetermined driving electrode.
 25. The touchsensor of claim 24, further comprising: a first layer on which theplurality of driving electrodes is disposed and a second layer on whichthe plurality of receiving electrodes is disposed, wherein the pluralityof dummy driving electrodes is disposed on the first layer, thereceiving electrode includes a first area overlapping the drivingelectrode and a second area overlapping the dummy driving electrode, andthe first area is larger than the second area.
 26. (canceled)
 27. Atouch sensor, comprising: a plurality of driving electrodes; and aplurality of receiving electrodes which is electrically insulated fromthe plurality of driving electrodes, wherein when a driving signal isapplied through a predetermined driving electrode among the plurality ofdriving electrodes, a first detection signal output from a firstreceiving electrode that forms mutual capacitance with the predetermineddriving electrode among the plurality of receiving electrodes includesinformation on the amount of mutual capacitance changed between thepredetermined driving electrode and the first receiving electrode andnoise information, a second detection signal output from a secondreceiving electrode that does not form the mutual capacitance with thepredetermined driving electrode among the plurality of receivingelectrodes includes the noise information, and the noise informationincludes display noise information of the display panel, noiseinformation by a conversion of an image displayed on the display panel,and information on the amount of negative (−) capacitance changed by anLGM jamming signal generated by coupling between an object and thepredetermined driving electrode.
 28. The touch sensor of claim 27,wherein the plurality of driving electrodes and the plurality ofreceiving electrodes are disposed on the same layer so as to beelectrically insulated from each other, and wherein one or more drivingelectrodes that are not electrically connected with the predetermineddriving electrode are disposed between the predetermined drivingelectrode and the second receiving electrode.
 29. (canceled)
 30. Thetouch sensor of claim 27, wherein when the driving signal is applied toanother driving electrode different from the predetermined drivingelectrode, the first sensing signal is output from the second receivingelectrode, and the second sensing signal is output from the firstreceiving electrode.
 31. The touch input device of claim 13, furthercomprising; a driving unit for applying a driving signal to theplurality of driving electrodes, wherein when the driving signal isapplied to another driving electrode different from the predetermineddriving electrode by the driving unit, the predetermined receivingelectrode does not form mutual capacitance with the another drivingelectrode, and the another predetermined receiving electrode formsmutual capacitance with the another driving electrode.
 32. The touchsensor of claim 23, further comprising: a first layer on which theplurality of driving electrodes is disposed and a second layer on whichthe plurality of receiving electrodes is disposed, wherein the pluralityof dummy receiving electrodes is disposed on the second layer, thedriving electrode includes a first area overlapping the receivingelectrode and a second area overlapping the dummy receiving electrode,and the first area is larger than the second area.